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 | |
|---|---|---|---|---|---|---|
|
PRTY
3351
CALL
DELISTED
Party City Holdco Inc.
PRTY
| $723K | ﹤0.01% |
202,200
+70,500
| +54% | +$319K |
|
|
SPTN
3352
PUT
DELISTED
SpartanNash
SPTN
| $722K | ﹤0.01% |
21,900
+17,200
| +366% | +$486K |
|
3353
Urban Outfitters
URBN
$6.21B
| $722K | ﹤0.01% |
28,783
-3,296
| -10% | -$90.1K |
|
|
GES
3354
DELISTED
Guess Inc
GES
| $721K | ﹤0.01% |
33,028
-221,922
| -87% | -$4.81M |
|
|
BINI
3355
DELISTED
Bollinger Innovations
BINI
| – | – |
0
| – | – |
|
3356
CALL
Dyadic International
DYAI
$40.8M
| $720K | ﹤0.01% |
239,400
+179,200
| +298% | +$672K |
|
3357
ProShares UltraShort S&P500
SDS
$426M
| $720K | ﹤0.01% |
+3,848
| New | +$762K |
|
3358
CALL
Vanguard FTSE Developed Markets ETF
VEA
$226B
| $720K | ﹤0.01% |
15,000
+7,300
| +95% | +$355K |
|
|
KNBE
3359
CALL
DELISTED
KnowBe4, Inc. Class A Common Stock
KNBE
| $720K | ﹤0.01% |
31,300
+4,300
| +16% | +$92.3K |
|
3360
PUT
Liberty Media Series A
FWONA
$22.6B
| $719K | ﹤0.01% |
23,814
-7,938
| -25% | -$429K |
|
3361
CALL
Uranium Energy
UEC
$4.8B
| $719K | ﹤0.01% |
156,700
-246,400
| -61% | -$906K |
|
3362
CALL
AvePoint
AVPT
$2.73B
| $718K | ﹤0.01% |
136,600
+11,700
| +9% | +$67K |
|
3363
PUT
Exelon
EXC
$48.4B
| $718K | ﹤0.01% |
23,400
-18,520
| -44% | -$785K |
|
|
CEI
3364
CALL
DELISTED
Camber Energy, Inc
CEI
| $718K | ﹤0.01% |
16,964
+10,494
| +162% | +$385K |
|
3365
CALL
Clearfield
CLFD
$422M
| $717K | ﹤0.01% |
11,000
+10,600
| +2,650% | +$665K |
|
3366
CALL
DHT Holdings
DHT
$2.93B
| $717K | ﹤0.01% |
123,700
+6,500
| +6% | +$35.8K |
|
|
HYFT
3367
CALL
MindWalk Holdings
HYFT
$67.7M
| $717K | ﹤0.01% |
139,500
+70,700
| +103% | +$363K |
|
3368
CALL
ProShares UltraShort Industrials
SIJ
$5.74M
| $717K | ﹤0.01% |
8,600
-1,875
| -18% | -$115K |
|
|
ME
3369
DELISTED
23andMe Holding Co
ME
| $717K | ﹤0.01% |
9,368
+4,168
| +80% | +$380K |
|
3370
CALL
ACM Research
ACMR
$5.43B
| $715K | ﹤0.01% |
34,600
+28,600
| +477% | +$720K |
|
|
EFC
3371
CALL
Ellington Financial
EFC
$1.68B
| $715K | ﹤0.01% |
40,300
+4,100
| +11% | +$72.2K |
|
3372
CALL
Ryanair
RYAAY
$29.8B
| $714K | ﹤0.01% |
20,500
-37,000
| -64% | -$1.52M |
|
3373
Valvoline
VVV
$5.04B
| $713K | ﹤0.01% |
22,601
+10,829
| +92% | +$354K |
|
|
ATCO
3374
CALL
DELISTED
Atlas Corp.
ATCO
| $713K | ﹤0.01% |
48,600
-81,000
| -63% | -$1.2M |
|
|
PDCE
3375
CALL
DELISTED
PDC Energy, Inc.
PDCE
| $712K | ﹤0.01% |
9,800
-1,000
| -9% | -$61.9K |
|
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.