Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$179M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$90.1M |
| 3 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$56M |
| 4 |
iShares Silver Trust
SLV
|
+$41.7M |
| 5 |
Advanced Micro Devices
AMD
|
+$39.8M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Financial Select Sector SPDR ETF
XLF
|
+$42.8M |
| 2 |
Verizon
VZ
|
+$42.5M |
| 3 |
Occidental Petroleum
OXY
|
+$34.7M |
| 4 |
iShares China Large-Cap ETF
FXI
|
+$33M |
| 5 |
Direxion Daily S&P 500 Bull 3x ETF
SPXL
|
+$32.7M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.67% |
| 2 | Consumer Discretionary | 0.37% |
| 3 | Industrials | 0.24% |
| 4 | Healthcare | 0.22% |
| 5 | Financials | 0.19% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
ARR
3301
CALL
Armour Residential REIT
ARR
$2.02B
| $747K | ﹤0.01% |
17,800
-2,780
| -14% | -$124K |
|
3302
AtaiBeckley Inc
ATAI
$2.65B
| $747K | ﹤0.01% |
146,818
+43,614
| +42% | +$242K |
|
3303
PUT
Weibo
WB
$1.93B
| $747K | ﹤0.01% |
30,500
-49,800
| -62% | -$1.47M |
|
3304
PUT
Vanguard Total International Stock ETF
VXUS
$153B
| $746K | ﹤0.01% |
12,500
-5,400
| -30% | -$329K |
|
3305
Trump Media & Technology Group
DJT
$2.52B
| $746K | ﹤0.01% |
11,570
+11,470
| +11,470% | +$863K |
|
3306
Century Aluminum
CENX
$4.4B
| $745K | ﹤0.01% |
28,328
+14,569
| +106% | +$307K |
|
3307
PUT
Denison Mines
DNN
$2.66B
| $745K | ﹤0.01% |
466,000
+86,700
| +23% | +$122K |
|
3308
Commercial Metals
CMC
$7.47B
| $744K | ﹤0.01% |
17,897
+15,069
| +533% | +$566K |
|
3309
United States 12 Month Oil Fund,
USL
$44.8M
| $744K | ﹤0.01% |
20,048
-22,971
| -53% | -$775K |
|
|
BRG
3310
PUT
DELISTED
Bluerock Residential Growth REIT, Inc.
BRG
| $743K | ﹤0.01% |
28,000
+200
| +0.7% | +$5.31K |
|
|
SRAX
3311
CALL
DELISTED
SRAX, Inc. Class A Common Stock
SRAX
| $743K | ﹤0.01% |
154,000
-56,900
| -27% | -$269K |
|
3312
CALL
Oscar Health
OSCR
$8.72B
| $742K | ﹤0.01% |
74,500
+64,200
| +623% | +$478K |
|
|
CTIC
3313
DELISTED
CTI BioPharma Corp. (DE) Common Stock
CTIC
| $740K | ﹤0.01% |
158,481
+76,355
| +93% | +$228K |
|
|
FATH
3314
CALL
DELISTED
Fathom Digital Manufacturing Corporation
FATH
| $739K | ﹤0.01% |
5,980
+4,710
| +371% | +$765K |
|
|
CMRC
3315
CALL
Commerce.com Inc Series 1
CMRC
$239M
| $738K | ﹤0.01% |
33,700
-25,800
| -43% | -$692K |
|
|
DAY
3316
CALL
DELISTED
Dayforce
DAY
| $738K | ﹤0.01% |
10,800
+5,500
| +104% | +$408K |
|
3317
CALL
Fomento Económico Mexicano
FMX
$44.8B
| $737K | ﹤0.01% |
8,900
-3,500
| -28% | -$276K |
|
3318
PUT
Joby Aviation
JOBY
$7.1B
| $737K | ﹤0.01% |
111,400
+79,400
| +248% | +$410K |
|
3319
CALL
Bio-Techne
TECH
$11.2B
| $736K | ﹤0.01% |
6,800
+2,000
| +42% | +$206K |
|
3320
PUT
Tootsie Roll Industries
TR
$2.9B
| $735K | ﹤0.01% |
23,681
+22,174
| +1,471% | +$662K |
|
|
TCDA
3321
DELISTED
Tricida, Inc. Common Stock
TCDA
| $735K | ﹤0.01% |
89,490
+35,179
| +65% | +$318K |
|
|
MITT
3322
TPG Mortgage Investment Trust
MITT
$233M
| $734K | ﹤0.01% |
78,962
+39,498
| +100% | +$380K |
|
3323
CALL
La-Z-Boy
LZB
$1.61B
| $733K | ﹤0.01% |
27,800
+24,600
| +769% | +$788K |
|
3324
CALL
Mohawk Industries
MHK
$7.05B
| $732K | ﹤0.01% |
5,900
-4,400
| -43% | -$660K |
|
|
CTLP
3325
PUT
DELISTED
Cantaloupe
CTLP
| $731K | ﹤0.01% |
108,100
-28,400
| -21% | -$215K |
|
Similar funds
Simplex Trading's Q1 2022 Portfolio in Review
As of Q1 2022, Simplex Trading held 12,038 positions worth $109B, up 10% from $99B the previous quarter. Its ten largest holdings account for 37% of the portfolio.
Simplex Trading deployed $17.5B of net new capital in Q1 2022, opening 1,603 new positions and adding to 4,441 existing holdings. Its largest new stake was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
By sector, the portfolio is most concentrated in Technology at 0.67% of assets, up from 0.61% a quarter earlier, followed by Consumer Discretionary and Industrials.
On the sell side, the largest reduction was Verizon, an estimated $42.5M trimmed.
- Simplex Trading's largest Q1 2022 buy was iShares 20+ Year Treasury Bond ETF: 652,921 shares worth $86.2M.
- Simplex Trading added most to Apple in Q1 2022, an estimated $179M increase.
- Simplex Trading's biggest Q1 2022 reduction was Verizon, cutting an estimated $42.5M.
- Simplex Trading fully exited State Street Financial Select Sector SPDR ETF in Q1 2022, selling an estimated $42.8M.
- Simplex Trading's ten largest holdings make up 37% of its $109B portfolio in Q1 2022.
- Simplex Trading opened 1,603 new positions and closed 1,637 in Q1 2022.
- Simplex Trading's portfolio value rose 10% quarter-over-quarter to $109B.
Based on Simplex Trading's 13F filing for Q1 2022, filed 2 May 2022.