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 | |
|---|---|---|---|---|---|---|
2376
CALL
NexGen Energy
NXE
$6.05B
| $2.09M | ﹤0.01% |
268,900
+112,600
| +72% | +$836K |
|
2377
Direxion Daily S&P 500 Bear 3x ETF
SPXS
$332M
| $2.09M | ﹤0.01% |
23,927
+19,048
| +390% | +$1.95M |
|
2378
T. Rowe Price
TROW
$25B
| $2.08M | ﹤0.01% |
+17,106
| New | +$1.91M |
|
2379
PUT
Virtu Financial
VIRT
$5.2B
| $2.08M | ﹤0.01% |
101,500
+76,100
| +300% | +$1.4M |
|
2380
CALL
TeraWulf
WULF
$9.15B
| $2.08M | ﹤0.01% |
791,300
+268,500
| +51% | +$530K |
|
|
GOGL
2381
PUT
DELISTED
Golden Ocean Group
GOGL
| $2.07M | ﹤0.01% |
160,100
-11,200
| -7% | -$129K |
|
2382
CALL
Dole
DOLE
$1.35B
| $2.07M | ﹤0.01% |
173,800
+173,700
| +173,700% | +$2.01M |
|
2383
CALL
Federal Agricultural Mortgage Class A
AGM.A
| $2.07M | ﹤0.01% |
10,500
-151,700
| -94% | -$22.6M |
|
2384
CALL
Westrock Coffee
WEST
$741M
| $2.06M | ﹤0.01% |
199,800
+5,800
| +3% | +$58.5K |
|
2385
CALL
QuantumScape Corp
QS
$3B
| $2.06M | ﹤0.01% |
327,900
-316,200
| -49% | -$2.13M |
|
2386
CALL
Equity Residential
EQR
$25.4B
| $2.06M | ﹤0.01% |
32,600
-400
| -1% | -$24.3K |
|
2387
CALL
RPM International
RPM
$13.7B
| $2.06M | ﹤0.01% |
17,300
+5,800
| +50% | +$645K |
|
|
HOLI
2388
PUT
DELISTED
Hollsys Automation Technologies INTERNATIONAL, LTD. COMMON (British Virgin Island)
HOLI
| $2.05M | ﹤0.01% |
80,300
+12,700
| +19% | +$326K |
|
2389
PUT
JB Hunt Transport Services
JBHT
$27.1B
| $2.05M | ﹤0.01% |
10,300
-28,900
| -74% | -$5.83M |
|
2390
CALL
NovoCure
NVCR
$2.04B
| $2.05M | ﹤0.01% |
131,200
+99,300
| +311% | +$1.46M |
|
|
ACB
2391
PUT
Aurora Cannabis
ACB
$165M
| $2.05M | ﹤0.01% |
466,900
+463,300
| +12,869% | +$1.79M |
|
2392
United States Natural Gas Fund
UNG
$470M
| $2.05M | ﹤0.01% |
140,611
-5,701
| -4% | -$104K |
|
|
CERE
2393
CALL
DELISTED
Cerevel Therapeutics Holdings, Inc. Common Stock
CERE
| $2.03M | ﹤0.01% |
48,100
+10,000
| +26% | +$420K |
|
2394
CALL
SLM Corp
SLM
$4.57B
| $2.03M | ﹤0.01% |
93,100
+24,700
| +36% | +$493K |
|
2395
PUT
Ardelyx
ARDX
$1.24B
| $2.02M | ﹤0.01% |
276,700
+2,300
| +0.8% | +$19.7K |
|
2396
Goodyear
GT
$2.07B
| $2.01M | ﹤0.01% |
146,497
-77,660
| -35% | -$1.02M |
|
2397
Krispy Kreme
DNUT
$543M
| $2.01M | ﹤0.01% |
131,922
+127,657
| +2,993% | +$1.7M |
|
2398
CALL
Frontline
FRO
$8.75B
| $2.01M | ﹤0.01% |
85,900
-68,900
| -45% | -$1.56M |
|
2399
Fastly Inc
FSLY
$3.17B
| $2.01M | ﹤0.01% |
154,888
+69,820
| +82% | +$1.18M |
|
2400
PUT
Comfort Systems
FIX
$61B
| $2M | ﹤0.01% |
6,300
+5,400
| +600% | +$1.38M |
|
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.