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 | |
|---|---|---|---|---|---|---|
526
CALL
NRG Energy
NRG
$29.1B
| $28.7M | 0.02% |
424,700
+152,400
| +56% | +$8.55M |
|
|
GAP
527
PUT
The Gap Inc
GAP
$6.81B
| $28.7M | 0.02% |
1,043,100
+132,100
| +15% | +$2.79M |
|
528
CALL
Amphenol
APH
$194B
| $28.5M | 0.02% |
494,800
+409,000
| +477% | +$21.4M |
|
529
PUT
Elevance Health
ELV
$81.9B
| $28.3M | 0.02% |
54,600
+1,100
| +2% | +$547K |
|
530
CALL
First Citizens BancShares
FCNCA
$25.3B
| $28.3M | 0.02% |
17,300
+16,700
| +2,783% | +$25.1M |
|
531
PUT
Invesco Aerospace & Defense ETF
PPA
$8.24B
| $28.1M | 0.02% |
169,400
-49,500
| -23% | -$4.7M |
|
532
Eli Lilly
LLY
$1.06T
| $28.1M | 0.02% |
+36,141
| New | +$25.7M |
|
533
PUT
Shell
SHEL
$246B
| $28.1M | 0.02% |
418,800
-130,400
| -24% | -$8.36M |
|
534
PUT
Las Vegas Sands
LVS
$30.5B
| $28.1M | 0.02% |
542,800
-190,500
| -26% | -$9.8M |
|
535
PUT
Dollar Tree
DLTR
$22.7B
| $28M | 0.02% |
210,600
+11,200
| +6% | +$1.54M |
|
536
PUT
Simon Property Group
SPG
$73.5B
| $28M | 0.02% |
179,100
-66,300
| -27% | -$9.72M |
|
537
CALL
BP
BP
$114B
| $28M | 0.02% |
743,100
-141,800
| -16% | -$5.08M |
|
|
B
538
Barrick Mining
B
$61.6B
| $27.8M | 0.02% |
1,673,456
-166,008
| -9% | -$2.6M |
|
539
Nike
NKE
$60.7B
| $27.8M | 0.02% |
296,021
-24,057
| -8% | -$2.45M |
|
540
PUT
TJX Companies
TJX
$169B
| $27.8M | 0.02% |
273,900
-153,800
| -36% | -$14.9M |
|
541
CALL
Hasbro
HAS
$12.3B
| $27.7M | 0.02% |
489,700
-34,000
| -6% | -$1.73M |
|
542
PUT
Lamb Weston
LW
$6.59B
| $27.7M | 0.02% |
259,600
+163,600
| +170% | +$17M |
|
543
CALL
Albemarle
ALB
$13.8B
| $27.5M | 0.02% |
208,900
-201,500
| -49% | -$24.8M |
|
|
P
544
CALL
Everpure Inc
P
$24.6B
| $27.5M | 0.02% |
528,300
+52,300
| +11% | +$2.34M |
|
545
PUT
Maplebear
CART
$9.97B
| $27.5M | 0.02% |
736,400
+80,700
| +12% | +$2.36M |
|
546
CALL
Ralph Lauren
RL
$22.3B
| $27.4M | 0.02% |
146,100
+67,800
| +87% | +$11.2M |
|
|
547
PUT
NRG Energy
NRG
$29.1B
| $27.3M | 0.02% |
403,800
+218,600
| +118% | +$12.3M |
|
548
Bristol-Myers Squibb
BMY
$126B
| $27.3M | 0.02% |
+503,748
| New | +$25.7M |
|
549
CALL
Match Group
MTCH
$8.59B
| $27.3M | 0.02% |
752,100
+46,000
| +7% | +$1.66M |
|
550
PUT
Darden Restaurants
DRI
$22.2B
| $27.2M | 0.02% |
162,800
-18,500
| -10% | -$3.07M |
|
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.