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
|
+$114M |
| 2 |
NVIDIA
NVDA
|
+$85.9M |
| 3 |
Citigroup
C
|
+$61.5M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$45.5M |
| 5 |
Pfizer
PFE
|
+$41.6M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$467M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$71.2M |
| 3 |
Meta Platforms (Facebook)
META
|
+$47.6M |
| 4 |
Intel
INTC
|
+$41.9M |
| 5 |
TSMC
TSM
|
+$35.9M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.51% |
| 2 | Financials | 0.35% |
| 3 | Consumer Discretionary | 0.3% |
| 4 | Healthcare | 0.25% |
| 5 | Industrials | 0.18% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2626
PUT
Aecom
ACM
$9.12B
| $1M | ﹤0.01% |
14,700
+9,500
| +183% | +$673K |
|
2627
CALL
M&T Bank
MTB
$36B
| $1M | ﹤0.01% |
5,700
-21,900
| -79% | -$3.88M |
|
2628
CALL
Payoneer
PAYO
$2.41B
| $1M | ﹤0.01% |
166,200
+92,800
| +126% | +$539K |
|
|
AKRO
2629
CALL
DELISTED
Akero Therapeutics
AKRO
| $1M | ﹤0.01% |
29,500
+29,000
| +5,800% | +$444K |
|
|
FPI
2630
CALL
Farmland Partners
FPI
$420M
| $1M | ﹤0.01% |
79,300
+65,300
| +466% | +$930K |
|
2631
Shutterstock
SSTK
$216M
| $1M | ﹤0.01% |
+19,994
| New | +$1.15M |
|
|
SGFY
2632
PUT
DELISTED
Signify Health, Inc.
SGFY
| $1M | ﹤0.01% |
34,400
+19,800
| +136% | +$456K |
|
2633
Clearfield
CLFD
$436M
| $1M | ﹤0.01% |
+9,575
| New | +$932K |
|
2634
Neogen
NEOG
$2.03B
| $1M | ﹤0.01% |
71,722
+71,617
| +68,207% | +$1.44M |
|
2635
CALL
Boyd Gaming
BYD
$6.64B
| $1M | ﹤0.01% |
21,000
-43,100
| -67% | -$2.31M |
|
|
RCM
2636
DELISTED
R1 RCM Inc. Common Stock
RCM
| $998K | ﹤0.01% |
53,865
+53,501
| +14,698% | +$1.22M |
|
2637
GoPro
GPRO
$119M
| $996K | ﹤0.01% |
202,031
+163,047
| +418% | +$969K |
|
2638
PUT
SBA Communications
SBAC
$18.3B
| $996K | ﹤0.01% |
3,500
+2,600
| +289% | +$844K |
|
|
SKX
2639
PUT
DELISTED
Skechers
SKX
| $996K | ﹤0.01% |
31,400
-4,100
| -12% | -$153K |
|
|
SWN
2640
PUT
DELISTED
Southwestern Energy Company
SWN
| $996K | ﹤0.01% |
162,900
+46,800
| +40% | +$324K |
|
2641
PUT
Sarepta Therapeutics
SRPT
$1.68B
| $994K | ﹤0.01% |
9,000
+6,600
| +275% | +$665K |
|
2642
ProShares Ultra Silver
AGQ
$1.18B
| $993K | ﹤0.01% |
47,879
+38,178
| +394% | +$825K |
|
2643
CALL
Costamare
CMRE
$1.89B
| $992K | ﹤0.01% |
110,900
-34,000
| -23% | -$375K |
|
2644
CALL
Repligen
RGEN
$7.39B
| $991K | ﹤0.01% |
5,300
+2,700
| +104% | +$569K |
|
2645
CALL
Equitable Holdings
EQH
$13.3B
| $990K | ﹤0.01% |
37,600
+24,800
| +194% | +$705K |
|
2646
CALL
Camtek
CAMT
$7.07B
| $989K | ﹤0.01% |
42,700
+20,000
| +88% | +$542K |
|
2647
PUT
Molina Healthcare
MOH
$10.4B
| $989K | ﹤0.01% |
3,000
-16,800
| -85% | -$5.41M |
|
|
SKX
2648
DELISTED
Skechers
SKX
| $989K | ﹤0.01% |
31,202
+20,407
| +189% | +$764K |
|
2649
CALL
Smith & Wesson
SWBI
$666M
| $989K | ﹤0.01% |
95,400
-5,900
| -6% | -$78K |
|
2650
PUT
Gerdau
GGB
$9.48B
| $988K | ﹤0.01% |
275,436
+20,160
| +8% | +$73.2K |
|
Similar funds
Simplex Trading's Q3 2022 Portfolio in Review
As of Q3 2022, Simplex Trading held 11,570 positions worth $88.5B, down 6% from $94.1B the previous quarter. Its ten largest holdings account for 38% of the portfolio.
Simplex Trading's Q3 2022 filing shows 1,564 new, 4,281 increased, 3,851 reduced and 1,575 closed positions. Its largest new stake was Microsoft: 432,062 shares worth $101M. The largest sale was Apple, an estimated $467M.
By sector, the portfolio is most concentrated in Technology at 0.51% of assets, down from 0.84% a quarter earlier, followed by Financials and Consumer Discretionary.
- Simplex Trading's largest Q3 2022 buy was Microsoft: 432,062 shares worth $101M.
- Simplex Trading added most to NVIDIA in Q3 2022, an estimated $85.9M increase.
- Simplex Trading's biggest Q3 2022 reduction was Apple, cutting an estimated $467M.
- Simplex Trading fully exited iShares Core S&P 500 ETF in Q3 2022, selling an estimated $34.3M.
- Simplex Trading's ten largest holdings make up 38% of its $88.5B portfolio in Q3 2022.
- Simplex Trading opened 1,564 new positions and closed 1,575 in Q3 2022.
- Simplex Trading's portfolio value fell 6% quarter-over-quarter to $88.5B.
Based on Simplex Trading's 13F filing for Q3 2022, filed 4 Nov 2022.