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 |
Pfizer
PFE
|
+$89.5M |
| 2 |
State Street Energy Select Sector SPDR ETF
XLE
|
+$85.5M |
| 3 |
Boeing
BA
|
+$71M |
| 4 |
Intel
INTC
|
+$60.7M |
| 5 |
Meta Platforms (Facebook)
META
|
+$48.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
NVIDIA
NVDA
|
+$117M |
| 2 |
Alphabet (Google) Class A
GOOGL
|
+$104M |
| 3 |
Alibaba
BABA
|
+$82.8M |
| 4 |
Walt Disney
DIS
|
+$68.5M |
| 5 |
Citigroup
C
|
+$59.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.38% |
| 2 | Healthcare | 0.27% |
| 3 | Consumer Discretionary | 0.25% |
| 4 | Industrials | 0.17% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
3376
FuboTV Inc
FUBO
$266M
| $784K | ﹤0.01% |
41,397
+10,985
| +36% | +$287K |
|
3377
CALL
Schrodinger
SDGR
$1.15B
| $783K | ﹤0.01% |
29,000
-42,800
| -60% | -$1.2M |
|
3378
CALL
Saic
SAIC
$5.16B
| $782K | ﹤0.01% |
6,000
+5,300
| +757% | +$702K |
|
3379
CALL
Prospect Capital
PSEC
$1.12B
| $781K | ﹤0.01% |
141,600
+13,700
| +11% | +$78.8K |
|
|
SILK
3380
CALL
DELISTED
Silk Road Medical, Inc. Common Stock
SILK
| $780K | ﹤0.01% |
42,600
+32,000
| +302% | +$508K |
|
3381
CALL
LGI Homes
LGIH
$1.44B
| $779K | ﹤0.01% |
6,700
-4,300
| -39% | -$508K |
|
3382
CALL
Privia Health
PRVA
$3.14B
| $779K | ﹤0.01% |
39,800
+17,500
| +78% | +$370K |
|
3383
CALL
Portillo's
PTLO
$340M
| $779K | ﹤0.01% |
55,000
+37,700
| +218% | +$523K |
|
3384
Invesco Solar ETF
TAN
$1.41B
| $779K | ﹤0.01% |
17,189
-71,854
| -81% | -$3.21M |
|
3385
PUT
International Money Express
IMXI
$393M
| $778K | ﹤0.01% |
34,100
+18,900
| +124% | +$397K |
|
3386
PUT
Sanmina
SANM
$9.09B
| $777K | ﹤0.01% |
12,500
+6,400
| +105% | +$372K |
|
|
QVCGA
3387
DELISTED
QVC Group Inc Series A
QVCGA
| $777K | ﹤0.01% |
+12,649
| New | +$661K |
|
|
HA
3388
DELISTED
Hawaiian Holdings, Inc.
HA
| $777K | ﹤0.01% |
58,300
-39,058
| -40% | -$543K |
|
3389
CALL
Mitek Systems
MITK
$762M
| $776K | ﹤0.01% |
55,100
+31,500
| +133% | +$386K |
|
3390
NextNav
NN
$1.86B
| $774K | ﹤0.01% |
117,641
+47,325
| +67% | +$211K |
|
3391
Manchester United
MANU
$4.01B
| $773K | ﹤0.01% |
+55,389
| New | +$976K |
|
3392
Melco Resorts & Entertainment
MLCO
$2.19B
| $773K | ﹤0.01% |
107,316
+8,820
| +9% | +$70.8K |
|
|
QVCGA
3393
PUT
DELISTED
QVC Group Inc Series A
QVCGA
| $773K | ﹤0.01% |
12,572
+11,108
| +759% | +$581K |
|
3394
CALL
Warner Music
WMG
$14.9B
| $772K | ﹤0.01% |
23,400
-97,900
| -81% | -$3.42M |
|
3395
CALL
St. Joe Company
JOE
$3.63B
| $771K | ﹤0.01% |
13,300
-7,400
| -36% | -$409K |
|
3396
PUT
Evolent Health
EVH
$403M
| $770K | ﹤0.01% |
23,500
-100,800
| -81% | -$3.22M |
|
3397
CALL
Genco Shipping & Trading
GNK
$1.1B
| $770K | ﹤0.01% |
37,900
-108,600
| -74% | -$2.01M |
|
3398
VanEck Semiconductor ETF
SMH
$63.9B
| $769K | ﹤0.01% |
+3,422
| New | +$688K |
|
3399
CALL
Haemonetics
HAE
$3.75B
| $768K | ﹤0.01% |
9,000
-43,200
| -83% | -$3.39M |
|
3400
Vanguard High Dividend Yield ETF
VYM
$81.9B
| $767K | ﹤0.01% |
6,340
+3,854
| +155% | +$442K |
|
Similar funds
Simplex Trading's Q1 2024 Portfolio in Review
As of Q1 2024, Simplex Trading held 10,366 positions worth $173B, up 11% from $156B the previous quarter. Its ten largest holdings account for 47% of the portfolio.
Simplex Trading's Q1 2024 filing shows 1,549 new, 3,675 increased, 3,484 reduced and 1,506 closed positions. Its largest new stake was Boeing: 345,653 shares worth $66.7M. The largest sale was NVIDIA, an estimated $117M.
By sector, the portfolio is most concentrated in Technology at 0.38% of assets, up from 0.33% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2024 buy was Boeing: 345,653 shares worth $66.7M.
- Simplex Trading added most to Pfizer in Q1 2024, an estimated $89.5M increase.
- Simplex Trading's biggest Q1 2024 reduction was NVIDIA, cutting an estimated $117M.
- Simplex Trading fully exited Citigroup in Q1 2024, selling an estimated $59.8M.
- Simplex Trading's ten largest holdings make up 47% of its $173B portfolio in Q1 2024.
- Simplex Trading opened 1,549 new positions and closed 1,506 in Q1 2024.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $173B.
Based on Simplex Trading's 13F filing for Q1 2024, filed 25 Apr 2024.