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 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$49.8M |
| 2 |
Apple
AAPL
|
+$24.5M |
| 3 |
Citigroup
C
|
+$23.5M |
| 4 |
Amazon
AMZN
|
+$22.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.5M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
LNKD
LinkedIn Corporation
LNKD
|
+$17.4M |
| 2 |
Wells Fargo
WFC
|
+$13.5M |
| 3 |
MDVN
MEDIVATION, INC.
MDVN
|
+$8.62M |
| 4 |
Goldman Sachs
GS
|
+$8.5M |
| 5 |
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
|
+$8.15M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.76% |
| 2 | Technology | 7.19% |
| 3 | Healthcare | 6.91% |
| 4 | Consumer Discretionary | 6.53% |
| 5 | Financials | 5.37% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
2601
CALL
Plains All American Pipeline
PAA
$17.4B
| $32K | ﹤0.01% |
361
-114
| -24% | -$3.6K |
|
2602
PUT
Children's Place
PLCE
$53.6M
| $32K | ﹤0.01% |
208
+205
| +6,833% | +$18.5K |
|
2603
PUT
uniQure
QURE
$2.68B
| $32K | ﹤0.01% |
30
+6
| +25% | +$40 |
|
2604
CALL
Rockwell Automation
ROK
$51.4B
| $32K | ﹤0.01% |
65
-43
| -40% | -$5.49K |
|
2605
CALL
Regal Rexnord
RRX
$14.2B
| $32K | ﹤0.01% |
87
+60
| +222% | +$3.97K |
|
2606
PUT
Shake Shack
SHAK
$2.3B
| $32K | ﹤0.01% |
205
+42
| +26% | +$1.47K |
|
2607
CALL
Sherwin-Williams
SHW
$78.3B
| $32K | ﹤0.01% |
147
-525
| -78% | -$46.4K |
|
|
HTO
2608
H2O America
HTO
$2.67B
| $32K | ﹤0.01% |
+576
| New | +$29.1K |
|
2609
PUT
Texas Instruments
TXN
$255B
| $32K | ﹤0.01% |
490
-1,560
| -76% | -$111K |
|
2610
PUT
Wingstop
WING
$3.68B
| $32K | ﹤0.01% |
33
+8
| +32% | +$235 |
|
2611
PUT
Dentsply Sirona
XRAY
$2.59B
| $32K | ﹤0.01% |
+10
| New | +$591 |
|
|
EVA
2612
DELISTED
Enviva Inc.
EVA
| $32K | ﹤0.01% |
+1,200
| New | +$32.6K |
|
|
CONN
2613
PUT
DELISTED
Conn's Inc.
CONN
| $32K | ﹤0.01% |
410
-218
| -35% | -$2.4K |
|
|
NAV
2614
PUT
DELISTED
Navistar International
NAV
| $32K | ﹤0.01% |
643
+388
| +152% | +$10.5K |
|
|
PIR
2615
PUT
DELISTED
Pier 1 Imports, Inc.
PIR
| $32K | ﹤0.01% |
5
+1
| +25% | +$116 |
|
|
APU
2616
CALL
DELISTED
AmeriGas Partners, L.P.
APU
| $32K | ﹤0.01% |
166
+24
| +17% | +$1.1K |
|
|
GIMO
2617
CALL
DELISTED
Gigamon Inc.
GIMO
| $32K | ﹤0.01% |
184
+57
| +45% | +$2.97K |
|
|
CEO
2618
PUT
DELISTED
CNOOC Limited
CEO
| $32K | ﹤0.01% |
287
+137
| +91% | +$17.7K |
|
|
WOOF
2619
CALL
DELISTED
VCA Inc.
WOOF
| $32K | ﹤0.01% |
44
+39
| +780% | +$2.55K |
|
2620
Applied Materials
AMAT
$426B
| $31K | ﹤0.01% |
987
-24,435
| -96% | -$743K |
|
2621
PUT
Coty
COTY
$2.33B
| $31K | ﹤0.01% |
203
-1,842
| -90% | -$38.1K |
|
2622
PUT
CSX Corp
CSX
$98.6B
| $31K | ﹤0.01% |
2,385
-732
| -23% | -$8.21K |
|
2623
CALL
DaVita
DVA
$15.1B
| $31K | ﹤0.01% |
310
-23
| -7% | -$1.43K |
|
2624
PUT
Eastman Chemical
EMN
$7.8B
| $31K | ﹤0.01% |
374
+186
| +99% | +$13.4K |
|
2625
CALL
Federated Hermes
FHI
$4.4B
| $31K | ﹤0.01% |
908
+734
| +422% | +$20.3K |
|
Similar funds
Simplex Trading's Q4 2016 Portfolio in Review
As of Q4 2016, Simplex Trading held 7,301 positions worth $1.67B, up 13% from $1.48B the previous quarter. Its ten largest holdings account for 20% of the portfolio.
Simplex Trading deployed $181M of net new capital in Q4 2016, opening 1,543 new positions and adding to 2,137 existing holdings. Its largest new stake was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
By sector, the portfolio is most concentrated in Communication Services at 8.8% of assets, up from 8.4% a quarter earlier, followed by Technology and Healthcare.
On the sell side, the largest reduction was Goldman Sachs, an estimated $8.5M trimmed.
- Simplex Trading's largest Q4 2016 buy was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
- Simplex Trading added most to Apple in Q4 2016, an estimated $24.5M increase.
- Simplex Trading's biggest Q4 2016 reduction was Goldman Sachs, cutting an estimated $8.5M.
- Simplex Trading fully exited LinkedIn Corporation in Q4 2016, selling an estimated $17.4M.
- Simplex Trading's ten largest holdings make up 20% of its $1.67B portfolio in Q4 2016.
- Simplex Trading opened 1,543 new positions and closed 1,480 in Q4 2016.
- Simplex Trading's portfolio value rose 13% quarter-over-quarter to $1.67B.
Based on Simplex Trading's 13F filing for Q4 2016, filed 11 Jan 2017.