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 |
Invesco QQQ Trust
QQQ
|
+$77.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$73.2M |
| 3 |
iShares MSCI EAFE ETF
EFA
|
+$38.5M |
| 4 |
Netflix
NFLX
|
+$38.4M |
| 5 |
NVIDIA
NVDA
|
+$36.3M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Apple
AAPL
|
+$55.9M |
| 2 |
iPath Series B S&P 500 VIX Short-Term Futures ETN
VXX
|
+$28.3M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$23.1M |
| 4 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$23.1M |
| 5 |
Adobe
ADBE
|
+$22M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Consumer Discretionary | 0.47% |
| 3 | Communication Services | 0.34% |
| 4 | Healthcare | 0.26% |
| 5 | Financials | 0.23% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2676
American Water Works
AWK
$26.3B
| $609K | ﹤0.01% |
+4,738
| New | +$590K |
|
2677
CALL
ICU Medical
ICUI
$3.93B
| $608K | ﹤0.01% |
33
-79
| -71% | -$15.7K |
|
2678
PUT
Lakeland Industries
LAKE
$106M
| $607K | ﹤0.01% |
271
+154
| +132% | +$2.52K |
|
|
MASI
2679
DELISTED
Masimo
MASI
| $607K | ﹤0.01% |
2,664
-146
| -5% | -$32K |
|
2680
Akebia Therapeutics
AKBA
$327M
| $606K | ﹤0.01% |
44,648
-71,938
| -62% | -$744K |
|
2681
CALL
CEVA Inc
CEVA
$1.01B
| $606K | ﹤0.01% |
162
+151
| +1,373% | +$4.84K |
|
2682
CALL
Ericsson
ERIC
$30.7B
| $606K | ﹤0.01% |
652
-497
| -43% | -$4.31K |
|
2683
CALL
Sally Beauty Holdings
SBH
$1.4B
| $606K | ﹤0.01% |
484
+458
| +1,762% | +$5.01K |
|
2684
CALL
CBRE Group
CBRE
$40.8B
| $605K | ﹤0.01% |
134
-248
| -65% | -$10.7K |
|
2685
PUT
Floor & Decor
FND
$5.81B
| $605K | ﹤0.01% |
105
-74
| -41% | -$3.38K |
|
2686
PUT
InterDigital
IDCC
$6.68B
| $605K | ﹤0.01% |
107
+74
| +224% | +$3.93K |
|
2687
CALL
Energy Focus
EFOI
$18.3M
| $604K | ﹤0.01% |
+125
| New | +$3.19K |
|
2688
PUT
Kilroy Realty
KRC
$4.58B
| $604K | ﹤0.01% |
+103
| New | +$6.24K |
|
2689
Transocean
RIG
$5.92B
| $604K | ﹤0.01% |
+330,298
| New | +$513K |
|
|
SAND
2690
CALL
DELISTED
Sandstorm Gold
SAND
| $604K | ﹤0.01% |
628
-472
| -43% | -$3.71K |
|
|
SOHU
2691
PUT
Sohu.com
SOHU
$336M
| $603K | ﹤0.01% |
655
+356
| +119% | +$2.78K |
|
|
ADAP
2692
PUT
DELISTED
Adaptimmune Therapeutics
ADAP
| $601K | ﹤0.01% |
601
+556
| +1,236% | +$3.49K |
|
2693
PUT
Brunswick
BC
$5.19B
| $601K | ﹤0.01% |
94
-115
| -55% | -$5.73K |
|
2694
CALL
Vail Resorts
MTN
$5.19B
| $601K | ﹤0.01% |
33
-7
| -18% | -$1.22K |
|
2695
SLM Corp
SLM
$4.57B
| $600K | ﹤0.01% |
85,359
+26,379
| +45% | +$197K |
|
2696
CALL
Liberty Media Series A
FWONA
$22.3B
| $599K | ﹤0.01% |
187
-45
| -19% | -$1.25K |
|
|
BRSL
2697
PUT
Brightstar Lottery PLC
BRSL
$1.91B
| $599K | ﹤0.01% |
674
+142
| +27% | +$1.11K |
|
2698
CALL
VeriSign
VRSN
$25.3B
| $599K | ﹤0.01% |
29
-196
| -87% | -$40.7K |
|
|
ATVI
2699
DELISTED
Activision Blizzard
ATVI
| $599K | ﹤0.01% |
7,898
-78,533
| -91% | -$5.48M |
|
|
APHA
2700
CALL
DELISTED
Aphria Inc. Common Shares
APHA
| $598K | ﹤0.01% |
1,394
-285
| -17% | -$1.09K |
|
Similar funds
Simplex Trading's Q2 2020 Portfolio in Review
As of Q2 2020, Simplex Trading held 8,917 positions worth $62.7B, up 11% from $56.7B the previous quarter. Its ten largest holdings account for 44% of the portfolio.
Simplex Trading's Q2 2020 filing shows 1,290 new, 3,427 increased, 2,723 reduced and 1,278 closed positions. Its largest new stake was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M. The largest sale was Apple, an estimated $55.9M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, up from 0.49% a quarter earlier, followed by Consumer Discretionary and Communication Services.
- Simplex Trading's largest Q2 2020 buy was iShares MSCI EAFE ETF: 665,841 shares worth $40.5M.
- Simplex Trading added most to Invesco QQQ Trust in Q2 2020, an estimated $77.3M increase.
- Simplex Trading's biggest Q2 2020 reduction was Apple, cutting an estimated $55.9M.
- Simplex Trading fully exited Adobe in Q2 2020, selling an estimated $22M.
- Simplex Trading's ten largest holdings make up 44% of its $62.7B portfolio in Q2 2020.
- Simplex Trading opened 1,290 new positions and closed 1,278 in Q2 2020.
- Simplex Trading's portfolio value rose 11% quarter-over-quarter to $62.7B.
Based on Simplex Trading's 13F filing for Q2 2020, filed 13 Jul 2020.