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 | |
|---|---|---|---|---|---|---|
4426
Telus
TU
$17.4B
| $179K | ﹤0.01% |
+9,224
| New | +$186K |
|
4427
Bausch Health
BHC
$1.75B
| $178K | ﹤0.01% |
22,329
-39,031
| -64% | -$288K |
|
4428
PUT
CRH
CRH
$66.6B
| $178K | ﹤0.01% |
+3,200
| New | +$160K |
|
4429
iShares MSCI United Kingdom ETF
EWU
$4.1B
| $178K | ﹤0.01% |
5,511
-16,825
| -75% | -$554K |
|
4430
CALL
Matsons
MATX
$6.11B
| $178K | ﹤0.01% |
2,300
-300
| -12% | -$20.6K |
|
|
RVPH
4431
DELISTED
REVIVA PHARMA HLDGS INC
RVPH
| $178K | ﹤0.01% |
+1,523
| New | +$193K |
|
4432
Xponential Fitness
XPOF
$286M
| $178K | ﹤0.01% |
10,357
+2,586
| +33% | +$73.2K |
|
4433
CALL
iShares Core Dividend ETF
DIVB
$1.71B
| $177K | ﹤0.01% |
4,700
+3,800
| +422% | +$141K |
|
4434
PUT
Viant Technology
DSP
$229M
| $177K | ﹤0.01% |
38,400
-1,000
| -3% | -$4.43K |
|
|
NXDR
4435
CALL
Nextdoor Holdings
NXDR
$885M
| $177K | ﹤0.01% |
54,600
+30,100
| +123% | +$74.6K |
|
4436
PUT
Lightwave Logic
LWLG
$823M
| $177K | ﹤0.01% |
25,400
-7,700
| -23% | -$44.8K |
|
4437
Annexon
ANNX
$796M
| $176K | ﹤0.01% |
50,020
+40,002
| +399% | +$175K |
|
4438
PUT
Brookfield Renewable
BEPC
$5.86B
| $176K | ﹤0.01% |
5,600
-9,700
| -63% | -$327K |
|
|
XRN
4439
CALL
Chiron Real Estate Inc
XRN
$535M
| $176K | ﹤0.01% |
3,860
+2,080
| +117% | +$94K |
|
4440
PUT
Kontoor Brands
KTB
$4.71B
| $176K | ﹤0.01% |
4,200
-700
| -14% | -$30.1K |
|
4441
CALL
Omnicell
OMCL
$1.88B
| $176K | ﹤0.01% |
2,400
+2,200
| +1,100% | +$148K |
|
|
HYZN
4442
CALL
DELISTED
Hyzon Motors Inc. Class A Common Stock
HYZN
| $176K | ﹤0.01% |
3,692
+1,090
| +42% | +$39.9K |
|
4443
Interparfums
IPAR
$4.07B
| $175K | ﹤0.01% |
1,298
+959
| +283% | +$134K |
|
|
LAND
4444
PUT
Gladstone Land Corp
LAND
$365M
| $175K | ﹤0.01% |
10,800
+4,100
| +61% | +$66.4K |
|
4445
CALL
Rollins
ROL
$18.6B
| $175K | ﹤0.01% |
4,100
+200
| +5% | +$8.13K |
|
4446
PUT
Ryan Specialty Holdings
RYAN
$6.02B
| $175K | ﹤0.01% |
3,900
-29,900
| -88% | -$1.26M |
|
4447
PUT
Banco Santander
SAN
$191B
| $175K | ﹤0.01% |
47,400
+7,300
| +18% | +$25.8K |
|
|
SOL
4448
DELISTED
Emeren Group
SOL
| $175K | ﹤0.01% |
46,339
-14,970
| -24% | -$58.1K |
|
|
MTTR
4449
CALL
DELISTED
Matterport, Inc. Class A Common Stock
MTTR
| $175K | ﹤0.01% |
55,800
-186,200
| -77% | -$516K |
|
4450
CALL
Liquidia Corp
LQDA
$7.72B
| $174K | ﹤0.01% |
22,200
-2,800
| -11% | -$21.8K |
|
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.