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 | |
|---|---|---|---|---|---|---|
|
ONIT
4451
PUT
Onity Group
ONIT
$342M
| $320K | ﹤0.01% |
13,500
-1,200
| -8% | -$39.2K |
|
4452
Viant Technology
DSP
$229M
| $319K | ﹤0.01% |
48,722
+43,027
| +756% | +$328K |
|
4453
PUT
WisdomTree US Total Dividend Fund
DTD
$1.64B
| $319K | ﹤0.01% |
6,800
-16,700
| -71% | -$1.06M |
|
4454
CALL
DXC Technology
DXC
$1.91B
| $319K | ﹤0.01% |
9,800
-86,300
| -90% | -$2.85M |
|
4455
PUT
Warrior Met Coal
HCC
$4.17B
| $319K | ﹤0.01% |
8,600
-400
| -4% | -$12.8K |
|
4456
CALL
abrdn Physical Silver Shares ETF
SIVR
$3.98B
| $319K | ﹤0.01% |
13,400
+2,300
| +21% | +$53.3K |
|
4457
PUT
Smart Sand
SND
$179M
| $319K | ﹤0.01% |
92,700
+69,900
| +307% | +$184K |
|
4458
CALL
Compass Diversified
CODI
$752M
| $318K | ﹤0.01% |
13,400
-300
| -2% | -$7.5K |
|
4459
PUT
Cemex
CX
$16.9B
| $318K | ﹤0.01% |
60,300
-98,200
| -62% | -$556K |
|
4460
PUT
Freshpet
FRPT
$3.04B
| $318K | ﹤0.01% |
3,100
+1,500
| +94% | +$141K |
|
4461
Vir Biotechnology
VIR
$1.46B
| $318K | ﹤0.01% |
12,364
-9,334
| -43% | -$277K |
|
4462
PUT
The GEO Group
GEO
$4B
| $317K | ﹤0.01% |
48,000
-63,000
| -57% | -$412K |
|
4463
CALL
LKQ Corp
LKQ
$6.72B
| $317K | ﹤0.01% |
7,000
-4,200
| -38% | -$215K |
|
4464
Spruce Power Holding Corp
SPRU
$36.6M
| $317K | ﹤0.01% |
19,928
+17,669
| +782% | +$308K |
|
4465
CALL
Upbound Group
UPBD
$1.22B
| $317K | ﹤0.01% |
12,600
+1,000
| +9% | +$36.1K |
|
4466
PUT
Q32 Bio
QTTB
$435M
| $317K | ﹤0.01% |
5,806
+5,212
| +877% | +$324K |
|
|
LFLY
4467
CALL
DELISTED
Leafly Holdings, Inc. Common Stock
LFLY
| $317K | ﹤0.01% |
1,920
-745
| -28% | -$119K |
|
4468
CALL
Alta Equipment Group
ALTG
$194M
| $316K | ﹤0.01% |
25,600
-21,200
| -45% | -$279K |
|
4469
CALL
ATI
ATI
$24.3B
| $316K | ﹤0.01% |
11,800
+7,900
| +203% | +$183K |
|
4470
Middleby
MIDD
$6.01B
| $316K | ﹤0.01% |
+1,933
| New | +$351K |
|
4471
PUT
Organogenesis Holdings
ORGO
$324M
| $316K | ﹤0.01% |
41,600
+40,700
| +4,522% | +$315K |
|
4472
Ross Stores
ROST
$80.8B
| $316K | ﹤0.01% |
3,500
+2,428
| +226% | +$231K |
|
|
HOLI
4473
DELISTED
Hollsys Automation Technologies INTERNATIONAL, LTD. COMMON (British Virgin Island)
HOLI
| $316K | ﹤0.01% |
19,845
+4,884
| +33% | +$71K |
|
4474
PUT
Kratos Defense & Security Solutions
KTOS
$8.23B
| $315K | ﹤0.01% |
15,400
-1,300
| -8% | -$23.7K |
|
4475
PUT
Royalty Pharma
RPRX
$26.2B
| $315K | ﹤0.01% |
8,100
-38,100
| -82% | -$1.5M |
|
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.