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 |
Apple
AAPL
|
+$286M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$82.3M |
| 3 |
Alphabet (Google) Class A
GOOGL
|
+$72.6M |
| 4 |
Alphabet (Google) Class C
GOOG
|
+$64.2M |
| 5 |
Intel
INTC
|
+$52.9M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$51.5M |
| 2 |
iShares Silver Trust
SLV
|
+$41.8M |
| 3 |
Ford
F
|
+$26.3M |
| 4 |
United Airlines
UAL
|
+$22.7M |
| 5 |
ExxonMobil
XOM
|
+$22.3M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.84% |
| 2 | Communication Services | 0.32% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.28% |
| 5 | Healthcare | 0.2% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
5776
Liberty Broadband Class C
LBRDK
$4.88B
| $85K | ﹤0.01% |
737
-1,227
| -62% | -$150K |
|
5777
Ocular Therapeutix
OCUL
$1.79B
| $85K | ﹤0.01% |
21,277
+16,468
| +342% | +$62.2K |
|
5778
PUT
Vuzix
VUZI
$194M
| $85K | ﹤0.01% |
12,100
-33,900
| -74% | -$199K |
|
5779
PUT
W.R. Berkley
WRB
$26.9B
| $85K | ﹤0.01% |
1,875
-3,600
| -66% | -$164K |
|
5780
PUT
XWELL
XWEL
$8.28M
| $85K | ﹤0.01% |
6,170
+260
| +4% | +$4.57K |
|
5781
PUT
Zymeworks
ZYME
$1.61B
| $85K | ﹤0.01% |
16,100
+14,600
| +973% | +$88.3K |
|
|
IRD
5782
CALL
Opus Genetics
IRD
$306M
| $85K | ﹤0.01% |
44,400
+43,000
| +3,071% | +$97.7K |
|
|
SOVO
5783
CALL
DELISTED
Sovos Brands, Inc. Common Stock
SOVO
| $85K | ﹤0.01% |
5,400
+5,100
| +1,700% | +$74.1K |
|
5784
PUT
Asbury Automotive
ABG
$4.31B
| $84K | ﹤0.01% |
500
-500
| -50% | -$86.6K |
|
5785
Celanese
CE
$4.9B
| $84K | ﹤0.01% |
718
+228
| +47% | +$32.7K |
|
|
CMBM
5786
PUT
DELISTED
Cambium Networks
CMBM
| $84K | ﹤0.01% |
5,800
+5,600
| +2,800% | +$88.2K |
|
5787
CALL
Dogness International Corp
DOGZ
$12.8M
| $84K | ﹤0.01% |
2,320
+485
| +26% | +$38.8K |
|
5788
CALL
Fate Therapeutics
FATE
$286M
| $84K | ﹤0.01% |
3,400
-3,600
| -51% | -$99.3K |
|
5789
CALL
Jack in the Box
JACK
$312M
| $84K | ﹤0.01% |
1,500
+1,100
| +275% | +$83.5K |
|
5790
CALL
Liberty Energy
LBRT
$3.05B
| $84K | ﹤0.01% |
6,600
-45,000
| -87% | -$706K |
|
5791
CALL
MillerKnoll
MLKN
$1.53B
| $84K | ﹤0.01% |
3,200
+2,400
| +300% | +$72.7K |
|
5792
PUT
MaxLinear
MXL
$6.06B
| $84K | ﹤0.01% |
2,500
-1,800
| -42% | -$75.4K |
|
|
NAK
5793
CALL
Northern Dynasty Minerals
NAK
$784M
| $84K | ﹤0.01% |
323,700
-2,500
| -0.8% | -$818 |
|
|
PSTL
5794
Postal Realty Trust
PSTL
$694M
| $84K | ﹤0.01% |
5,692
+5,260
| +1,218% | +$84.1K |
|
5795
PUT
Singularity Future Technology
SGLY
$4.69M
| $84K | ﹤0.01% |
200
+69
| +53% | +$56.5K |
|
5796
CALL
Tilly's
TLYS
$116M
| $84K | ﹤0.01% |
12,100
-3,100
| -20% | -$25.9K |
|
|
VXRT
5797
DELISTED
Vaxart
VXRT
| $84K | ﹤0.01% |
24,211
-3,304
| -12% | -$12.3K |
|
|
PDCO
5798
PUT
DELISTED
Patterson Companies, Inc.
PDCO
| $84K | ﹤0.01% |
2,800
+600
| +27% | +$18.8K |
|
|
MNTV
5799
CALL
DELISTED
Momentive Global Inc. Common Stock
MNTV
| $84K | ﹤0.01% |
9,600
-6,700
| -41% | -$89.7K |
|
|
API
5800
PUT
Agora
API
$338M
| $83K | ﹤0.01% |
12,700
-800
| -6% | -$5.67K |
|
Similar funds
Simplex Trading's Q2 2022 Portfolio in Review
As of Q2 2022, Simplex Trading held 11,810 positions worth $94.1B, down 14% from $109B the previous quarter. Its ten largest holdings account for 40% of the portfolio.
Simplex Trading deployed $11.3B of net new capital in Q2 2022, opening 1,405 new positions and adding to 4,027 existing holdings. Its largest new stake was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
By sector, the portfolio is most concentrated in Technology at 0.84% of assets, up from 0.67% a quarter earlier, followed by Communication Services and Consumer Discretionary.
On the sell side, the largest reduction was United Airlines, an estimated $22.7M trimmed.
- Simplex Trading's largest Q2 2022 buy was Alphabet (Google) Class C: 543,540 shares worth $59.4M.
- Simplex Trading added most to Apple in Q2 2022, an estimated $286M increase.
- Simplex Trading's biggest Q2 2022 reduction was United Airlines, cutting an estimated $22.7M.
- Simplex Trading fully exited State Street SPDR S&P 500 ETF Trust in Q2 2022, selling an estimated $51.5M.
- Simplex Trading's ten largest holdings make up 40% of its $94.1B portfolio in Q2 2022.
- Simplex Trading opened 1,405 new positions and closed 1,792 in Q2 2022.
- Simplex Trading's portfolio value fell 14% quarter-over-quarter to $94.1B.
Based on Simplex Trading's 13F filing for Q2 2022, filed 3 Aug 2022.