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 |
NVIDIA
NVDA
|
+$93M |
| 2 |
Citigroup
C
|
+$74.8M |
| 3 |
Pinduoduo
PDD
|
+$50.7M |
| 4 |
Intel
INTC
|
+$47.1M |
| 5 |
Broadcom
AVGO
|
+$46.2M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$94.5M |
| 2 |
Pfizer
PFE
|
+$66.4M |
| 3 |
Boeing
BA
|
+$61.6M |
| 4 |
PayPal
PYPL
|
+$42.2M |
| 5 |
GE Aerospace
GE
|
+$42M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.53% |
| 2 | Consumer Discretionary | 0.29% |
| 3 | Healthcare | 0.21% |
| 4 | Financials | 0.2% |
| 5 | Materials | 0.12% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2301
PUT
Winnebago Industries
WGO
$870M
| $1.8M | ﹤0.01% |
33,300
-179,900
| -84% | -$11.1M |
|
2302
Deckers Outdoor
DECK
$13.3B
| $1.8M | ﹤0.01% |
11,178
-85,914
| -88% | -$13.2M |
|
2303
PUT
Shoals Technologies Group
SHLS
$1.58B
| $1.8M | ﹤0.01% |
288,800
+186,400
| +182% | +$1.49M |
|
2304
CALL
Rogers Communications
RCI
$17.7B
| $1.8M | ﹤0.01% |
48,700
+44,900
| +1,182% | +$1.74M |
|
2305
Rocket Companies
RKT
$36.9B
| $1.8M | ﹤0.01% |
131,359
+45,749
| +53% | +$618K |
|
2306
CALL
New Oriental
EDU
$7.84B
| $1.79M | ﹤0.01% |
23,100
-12,400
| -35% | -$1.01M |
|
2307
PUT
American Superconductor
AMSC
$1.48B
| $1.79M | ﹤0.01% |
76,700
-42,400
| -36% | -$700K |
|
2308
CALL
Box
BOX
$4.02B
| $1.79M | ﹤0.01% |
67,800
+17,800
| +36% | +$474K |
|
2309
CALL
Eldorado Gold
EGO
$8.31B
| $1.79M | ﹤0.01% |
121,100
-59,300
| -33% | -$899K |
|
2310
CALL
Invesco CurrencyShares Euro Currency Trust
FXE
$331M
| $1.79M | ﹤0.01% |
18,100
-17,000
| -48% | -$1.69M |
|
2311
CALL
Halozyme
HALO
$9.72B
| $1.79M | ﹤0.01% |
34,200
-31,100
| -48% | -$1.36M |
|
|
ALTM
2312
CALL
DELISTED
Arcadium Lithium plc
ALTM
| $1.79M | ﹤0.01% |
533,000
+143,500
| +37% | +$600K |
|
|
VTLE
2313
CALL
DELISTED
Vital Energy
VTLE
| $1.79M | ﹤0.01% |
39,900
-14,400
| -27% | -$718K |
|
2314
PUT
Core & Main
CNM
$8.17B
| $1.79M | ﹤0.01% |
36,500
-404,800
| -92% | -$22.5M |
|
2315
CALL
Viatris
VTRS
$20.1B
| $1.78M | ﹤0.01% |
167,800
-62,100
| -27% | -$686K |
|
2316
CALL
Green Plains
GPRE
$1.19B
| $1.78M | ﹤0.01% |
112,400
-56,700
| -34% | -$1.09M |
|
2317
SiriusXM
SIRI
$10B
| $1.78M | ﹤0.01% |
62,892
+52,187
| +488% | +$1.56M |
|
2318
CALL
Teekay Tankers
TNK
$2.63B
| $1.77M | ﹤0.01% |
25,800
-27,800
| -52% | -$1.81M |
|
2319
CALL
Dycom Industries
DY
$12.9B
| $1.77M | ﹤0.01% |
10,500
-11,200
| -52% | -$1.75M |
|
2320
CALL
FT Vest Gold Strategy Target Income ETF
IGLD
$507M
| $1.77M | ﹤0.01% |
16,400
+2,800
| +21% | +$56.2K |
|
2321
CALL
Invitation Homes
INVH
$17.7B
| $1.77M | ﹤0.01% |
49,300
-139,800
| -74% | -$4.86M |
|
2322
CALL
VICI Properties
VICI
$29.4B
| $1.77M | ﹤0.01% |
61,800
-8,400
| -12% | -$241K |
|
2323
Rapid7
RPD
$634M
| $1.77M | ﹤0.01% |
+40,914
| New | +$1.7M |
|
2324
BP
BP
$113B
| $1.76M | ﹤0.01% |
+48,907
| New | +$1.83M |
|
|
DAY
2325
CALL
DELISTED
Dayforce
DAY
| $1.76M | ﹤0.01% |
35,600
-84,500
| -70% | -$4.83M |
|
Similar funds
Simplex Trading's Q2 2024 Portfolio in Review
As of Q2 2024, Simplex Trading held 10,213 positions worth $162B, down 6.5% from $173B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading withdrew a net $19.2B in Q2 2024, closing 1,431 positions and reducing 4,061 holdings. Its most notable exit was Boeing, an estimated $61.6M position sold in full.
By sector, the portfolio is most concentrated in Technology at 0.53% of assets, up from 0.38% a quarter earlier, followed by Consumer Discretionary and Healthcare.
Against the trend, Simplex Trading opened a new position in Citigroup worth $77M.
- Simplex Trading's largest Q2 2024 buy was Citigroup: 1,213,247 shares worth $77M.
- Simplex Trading added most to NVIDIA in Q2 2024, an estimated $93M increase.
- Simplex Trading's biggest Q2 2024 reduction was State Street Energy Select Sector SPDR ETF, cutting an estimated $94.5M.
- Simplex Trading fully exited Boeing in Q2 2024, selling an estimated $61.6M.
- Simplex Trading's ten largest holdings make up 50% of its $162B portfolio in Q2 2024.
- Simplex Trading opened 1,358 new positions and closed 1,431 in Q2 2024.
- Simplex Trading's portfolio value fell 6.5% quarter-over-quarter to $162B.
Based on Simplex Trading's 13F filing for Q2 2024, filed 25 Jul 2024.