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 |
Microsoft
MSFT
|
+$53.9M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.9M |
| 3 |
NVIDIA
NVDA
|
+$47.1M |
| 4 |
PayPal
PYPL
|
+$41.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$28.4M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$51.4M |
| 2 |
Walmart Inc
WMT
|
+$46.4M |
| 3 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 4 |
Adobe
ADBE
|
+$33.5M |
| 5 |
Starbucks
SBUX
|
+$26.8M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.41% |
| 2 | Healthcare | 0.21% |
| 3 | Consumer Discretionary | 0.21% |
| 4 | Communication Services | 0.2% |
| 5 | Financials | 0.15% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
601
PUT
HCA Healthcare
HCA
$82.5B
| $18.9M | 0.02% |
62,300
-18,400
| -23% | -$5.12M |
|
602
PUT
Antero Resources
AR
$10.9B
| $18.9M | 0.02% |
818,900
-138,200
| -14% | -$3.07M |
|
603
Ford
F
$57.5B
| $18.8M | 0.02% |
1,245,546
+674,907
| +118% | +$8.54M |
|
604
PUT
Pultegroup
PHM
$24.1B
| $18.8M | 0.02% |
241,700
+195,900
| +428% | +$13.3M |
|
605
PUT
Spectrum Brands
SPB
$2.05B
| $18.8M | 0.02% |
240,500
-79,200
| -25% | -$5.65M |
|
|
WBA
606
PUT
DELISTED
Walgreens Boots Alliance
WBA
| $18.7M | 0.02% |
658,000
-92,800
| -12% | -$3.02M |
|
607
CALL
Plug Power
PLUG
$3.11B
| $18.7M | 0.02% |
1,800,600
+847,200
| +89% | +$7.71M |
|
608
PUT
Ally Financial
ALLY
$13.6B
| $18.7M | 0.02% |
691,100
-544,000
| -44% | -$14.5M |
|
|
CTLT
609
CALL
DELISTED
CATALENT, INC.
CTLT
| $18.7M | 0.02% |
430,300
+353,100
| +457% | +$15.5M |
|
610
CALL
ChargePoint
CHPT
$151M
| $18.7M | 0.02% |
106,115
+20,340
| +24% | +$3.57M |
|
611
CALL
Lyft
LYFT
$5.57B
| $18.7M | 0.02% |
1,944,900
+584,500
| +43% | +$5.62M |
|
612
CALL
Zebra Technologies
ZBRA
$12.5B
| $18.6M | 0.02% |
63,000
+46,900
| +291% | +$13.2M |
|
613
PUT
American International
AIG
$41.5B
| $18.6M | 0.02% |
323,600
-225,800
| -41% | -$12.1M |
|
614
PUT
Vanguard Consumer Discretionary ETF
VCR
$6.07B
| $18.6M | 0.02% |
42,200
+39,000
| +1,219% | +$10.1M |
|
615
CALL
Toronto Dominion Bank
TD
$200B
| $18.6M | 0.02% |
299,300
-143,700
| -32% | -$8.64M |
|
616
PUT
Hasbro
HAS
$12.6B
| $18.5M | 0.02% |
285,200
-29,000
| -9% | -$1.69M |
|
617
Intel
INTC
$516B
| $18.5M | 0.02% |
552,185
+12,315
| +2% | +$387K |
|
618
PUT
RTX Corp
RTX
$262B
| $18.4M | 0.02% |
188,300
-67,300
| -26% | -$6.59M |
|
619
CALL
Skyworks Solutions
SWKS
$9.5B
| $18.4M | 0.02% |
166,500
-20,400
| -11% | -$2.15M |
|
620
PUT
BioNTech
BNTX
$23.2B
| $18.4M | 0.02% |
170,200
+66,500
| +64% | +$7.48M |
|
621
PUT
Colgate-Palmolive
CL
$73.3B
| $18.4M | 0.02% |
238,200
-163,400
| -41% | -$12.6M |
|
|
SKX
622
PUT
DELISTED
Skechers
SKX
| $18.3M | 0.02% |
348,000
+3,500
| +1% | +$179K |
|
623
PUT
Burlington
BURL
$22.3B
| $18.3M | 0.02% |
116,200
-9,700
| -8% | -$1.66M |
|
|
APLS
624
PUT
DELISTED
Apellis Pharmaceuticals
APLS
| $18.3M | 0.02% |
200,500
+93,000
| +87% | +$8.02M |
|
625
CALL
Zillow
Z
$7.18B
| $18.3M | 0.02% |
363,700
-232,700
| -39% | -$10.7M |
|
Similar funds
Simplex Trading's Q2 2023 Portfolio in Review
As of Q2 2023, Simplex Trading held 10,535 positions worth $122B, up 6.9% from $114B the previous quarter. Its ten largest holdings account for 43% of the portfolio.
Simplex Trading's Q2 2023 filing shows 1,474 new, 3,350 increased, 3,913 reduced and 1,517 closed positions. Its largest new stake was Microsoft: 171,935 shares worth $58.5M. The largest sale was Apple, an estimated $51.4M.
By sector, the portfolio is most concentrated in Technology at 0.41% of assets, down from 0.42% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q2 2023 buy was Microsoft: 171,935 shares worth $58.5M.
- Simplex Trading added most to iShares 20+ Year Treasury Bond ETF in Q2 2023, an estimated $52.9M increase.
- Simplex Trading's biggest Q2 2023 reduction was Adobe, cutting an estimated $33.5M.
- Simplex Trading fully exited Apple in Q2 2023, selling an estimated $51.4M.
- Simplex Trading's ten largest holdings make up 43% of its $122B portfolio in Q2 2023.
- Simplex Trading opened 1,474 new positions and closed 1,517 in Q2 2023.
- Simplex Trading's portfolio value rose 6.9% quarter-over-quarter to $122B.
Based on Simplex Trading's 13F filing for Q2 2023, filed 4 Aug 2023.