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 |
SPDR Gold Trust
GLD
|
+$31.6M |
| 2 |
iShares Silver Trust
SLV
|
+$28.1M |
| 3 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$25.1M |
| 4 |
JPMorgan Chase
JPM
|
+$24.5M |
| 5 |
Direxion Daily Junior Gold Miners Index Bull 2X ETF
JNUG
|
+$24M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Alphabet (Google) Class C
GOOG
|
+$51.6M |
| 2 |
Amazon
AMZN
|
+$47.4M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$44.7M |
| 4 |
Netflix
NFLX
|
+$38.3M |
| 5 |
NVIDIA
NVDA
|
+$31.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Technology | 0.49% |
| 2 | Healthcare | 0.33% |
| 3 | Consumer Discretionary | 0.32% |
| 4 | Financials | 0.16% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
ESPR
2676
CALL
DELISTED
Esperion Therapeutics
ESPR
| $463K | ﹤0.01% |
147
-185
| -56% | -$9.76K |
|
|
DLPH
2677
DELISTED
Delphi Technologies PLC Ordinary Shares
DLPH
| $463K | ﹤0.01% |
57,591
+39,969
| +227% | +$496K |
|
2678
Chewy
CHWY
$8.54B
| $462K | ﹤0.01% |
12,324
-1,581
| -11% | -$46.4K |
|
2679
CALL
First American
FAF
$7.67B
| $462K | ﹤0.01% |
+109
| New | +$6.22K |
|
2680
PUT
Frontdoor
FTDR
$5.02B
| $462K | ﹤0.01% |
133
+113
| +565% | +$4.81K |
|
2681
Melco Resorts & Entertainment
MLCO
$2.1B
| $462K | ﹤0.01% |
+37,306
| New | +$713K |
|
2682
Ralph Lauren
RL
$22.2B
| $462K | ﹤0.01% |
6,922
-2,628
| -28% | -$276K |
|
2683
CALL
Abercrombie & Fitch
ANF
$4.17B
| $461K | ﹤0.01% |
508
-190
| -27% | -$2.75K |
|
2684
CALL
GameStop
GME
$9.5B
| $461K | ﹤0.01% |
5,272
+2,864
| +119% | +$3.07K |
|
2685
CALL
Teucrium Soybean Fund
SOYB
$57.2M
| $461K | ﹤0.01% |
406
+76
| +23% | +$1.12K |
|
2686
Direxion Daily Small Cap Bull 3x ETF
TNA
$1.34B
| $461K | ﹤0.01% |
+27,915
| New | +$1.52M |
|
2687
CALL
Kinsale Capital Group
KNSL
$7.95B
| $459K | ﹤0.01% |
44
-291
| -87% | -$32.8K |
|
2688
PUT
National Vision
EYE
$1.6B
| $458K | ﹤0.01% |
236
+143
| +154% | +$4.45K |
|
2689
PUT
Jazz Pharmaceuticals
JAZZ
$15.9B
| $458K | ﹤0.01% |
46
-155
| -77% | -$20K |
|
2690
PUT
Ligand Pharmaceuticals
LGND
$6.02B
| $458K | ﹤0.01% |
101
-351
| -78% | -$19.9K |
|
2691
PUT
W.P. Carey
WPC
$17.1B
| $458K | ﹤0.01% |
81
-60
| -43% | -$4.55K |
|
2692
Acadia Pharmaceuticals
ACAD
$4.25B
| $457K | ﹤0.01% |
10,834
-16,020
| -60% | -$660K |
|
2693
PUT
XP
XP
$8.62B
| $457K | ﹤0.01% |
+237
| New | +$8.01K |
|
|
COHR
2694
PUT
DELISTED
Coherent Inc
COHR
| $457K | ﹤0.01% |
43
+2
| +5% | +$280 |
|
2695
PUT
Artivion
AORT
$1.23B
| $456K | ﹤0.01% |
270
+242
| +864% | +$6.21K |
|
2696
Vail Resorts
MTN
$5.19B
| $456K | ﹤0.01% |
+3,093
| New | +$666K |
|
2697
PUT
Broadridge
BR
$17.2B
| $455K | ﹤0.01% |
48
+5
| +12% | +$570 |
|
2698
Cal-Maine
CALM
$4.28B
| $455K | ﹤0.01% |
10,353
+3,890
| +60% | +$147K |
|
2699
CALL
Insperity
NSP
$1.85B
| $455K | ﹤0.01% |
122
+60
| +97% | +$4.26K |
|
2700
CALL
PBF Energy
PBF
$7.29B
| $455K | ﹤0.01% |
644
-396
| -38% | -$8.89K |
|
Similar funds
Simplex Trading's Q1 2020 Portfolio in Review
As of Q1 2020, Simplex Trading held 8,783 positions worth $56.7B, up 24% from $45.7B the previous quarter. Its ten largest holdings account for 50% of the portfolio.
Simplex Trading's Q1 2020 filing shows 1,512 new, 3,249 increased, 2,705 reduced and 1,159 closed positions. Its largest new stake was SPDR Gold Trust: 212,230 shares worth $31.4M. The largest sale was Alphabet (Google) Class C, an estimated $51.6M.
By sector, the portfolio is most concentrated in Technology at 0.49% of assets, down from 0.75% a quarter earlier, followed by Healthcare and Consumer Discretionary.
- Simplex Trading's largest Q1 2020 buy was SPDR Gold Trust: 212,230 shares worth $31.4M.
- Simplex Trading added most to JPMorgan Chase in Q1 2020, an estimated $24.5M increase.
- Simplex Trading's biggest Q1 2020 reduction was Amazon, cutting an estimated $47.4M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q1 2020, selling an estimated $51.6M.
- Simplex Trading's ten largest holdings make up 50% of its $56.7B portfolio in Q1 2020.
- Simplex Trading opened 1,512 new positions and closed 1,159 in Q1 2020.
- Simplex Trading's portfolio value rose 24% quarter-over-quarter to $56.7B.
Based on Simplex Trading's 13F filing for Q1 2020, filed 29 Apr 2020.