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 | |
|---|---|---|---|---|---|---|
1326
CALL
NexGen Energy
NXE
$6.05B
| $5.92M | ﹤0.01% |
848,000
+579,100
| +215% | +$4.43M |
|
1327
Walt Disney
DIS
$165B
| $5.91M | ﹤0.01% |
59,516
-97,736
| -62% | -$10.5M |
|
1328
CALL
Deckers Outdoor
DECK
$13.3B
| $5.9M | ﹤0.01% |
36,600
-26,400
| -42% | -$4.06M |
|
1329
CALL
Howmet Aerospace
HWM
$116B
| $5.89M | ﹤0.01% |
75,900
-7,600
| -9% | -$575K |
|
1330
PUT
H&R Block
HRB
$5.18B
| $5.89M | ﹤0.01% |
108,600
+16,700
| +18% | +$831K |
|
1331
PUT
Tower Semiconductor
TSEM
$26.4B
| $5.89M | ﹤0.01% |
149,800
-115,300
| -43% | -$4.1M |
|
1332
PUT
GE HealthCare
GEHC
$27.6B
| $5.88M | ﹤0.01% |
75,500
-80,200
| -52% | -$6.54M |
|
1333
PUT
Ameren
AEE
$31.5B
| $5.88M | ﹤0.01% |
82,700
+79,800
| +2,752% | +$5.8M |
|
1334
CALL
Vail Resorts
MTN
$5.19B
| $5.87M | ﹤0.01% |
32,600
-200
| -0.6% | -$39.8K |
|
1335
PUT
ProShares Ultra S&P500
SSO
$7.82B
| $5.87M | ﹤0.01% |
136,000
-217,000
| -61% | -$8.34M |
|
1336
PUT
Amplify Online Retail ETF
IBUY
$106M
| $5.87M | ﹤0.01% |
668,600
+521,500
| +355% | +$28.8M |
|
1337
PUT
Tradeweb Markets
TW
$21.3B
| $5.85M | ﹤0.01% |
55,200
-38,000
| -41% | -$4.02M |
|
1338
CALL
Target Hospitality
TH
$1.61B
| $5.83M | ﹤0.01% |
669,800
+613,900
| +1,098% | +$6.41M |
|
1339
Transocean
RIG
$5.92B
| $5.83M | ﹤0.01% |
1,089,497
-48,825
| -4% | -$282K |
|
|
CTRA
1340
PUT
DELISTED
Coterra Energy
CTRA
| $5.82M | ﹤0.01% |
218,400
-39,400
| -15% | -$1.09M |
|
1341
CALL
FMC
FMC
$1.42B
| $5.82M | ﹤0.01% |
101,200
-22,700
| -18% | -$1.36M |
|
1342
PUT
Bath & Body Works
BBWI
$4.01B
| $5.82M | ﹤0.01% |
149,000
-110,600
| -43% | -$5.08M |
|
1343
PUT
Invitation Homes
INVH
$17.7B
| $5.82M | ﹤0.01% |
162,100
+55,900
| +53% | +$1.94M |
|
1344
PUT
ArcBest
ARCB
$3.44B
| $5.8M | ﹤0.01% |
54,200
-2,400
| -4% | -$289K |
|
1345
CALL
Kimbell Royalty Partners
KRP
$1.47B
| $5.8M | ﹤0.01% |
354,700
+67,500
| +24% | +$1.1M |
|
1346
PUT
Incyte
INCY
$23.5B
| $5.8M | ﹤0.01% |
95,700
+22,800
| +31% | +$1.29M |
|
1347
PUT
Cogent Communications
CCOI
$594M
| $5.8M | ﹤0.01% |
102,700
+94,000
| +1,080% | +$5.61M |
|
1348
PUT
Core Scientific
CORZ
$7.23B
| $5.79M | ﹤0.01% |
622,500
+564,200
| +968% | +$2.88M |
|
1349
PUT
Beyond Meat
BYND
$288M
| $5.79M | ﹤0.01% |
862,700
-186,600
| -18% | -$1.32M |
|
1350
CALL
Hyatt Hotels
H
$17.6B
| $5.79M | ﹤0.01% |
38,100
+3,200
| +9% | +$480K |
|
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.