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 | |
|---|---|---|---|---|---|---|
526
Expeditors International
EXPD
$23.2B
| $520K | 0.03% |
9,831
+6,189
| +170% | +$323K |
|
|
VXX
527
DELISTED
iPath S&P 500 VIX Short-Term Futures ETN due 1/30/2019
VXX
| $520K | 0.03% |
+5,101
| New | +$612K |
|
528
Southwest Airlines
LUV
$23.3B
| $519K | 0.03% |
10,421
-13,075
| -56% | -$586K |
|
|
KYNB
529
Kyntra Bio
KYNB
$29.2M
| $518K | 0.03% |
968
+885
| +1,066% | +$442K |
|
530
Madison Square Garden
MSGS
$9.56B
| $517K | 0.03% |
4,231
+2,958
| +232% | +$359K |
|
531
CALL
Procter & Gamble
PG
$347B
| $517K | 0.03% |
1,892
-4,905
| -72% | -$418K |
|
532
Avanos Medical
AVNS
$1.17B
| $511K | 0.03% |
13,845
+11,129
| +410% | +$398K |
|
533
eBay
EBAY
$49.3B
| $511K | 0.03% |
+17,231
| New | +$509K |
|
534
Altisource Portfolio Solutions
ASPS
$74M
| $510K | 0.03% |
2,401
+1,754
| +271% | +$391K |
|
535
CALL
CNX Resources
CNX
$4.9B
| $510K | 0.03% |
2,323
-109
| -4% | -$1.72K |
|
536
Invesco DB US Dollar Index Bullish Fund
UUP
$432M
| $507K | 0.03% |
19,187
+9,348
| +95% | +$241K |
|
537
PUT
Home Depot
HD
$330B
| $506K | 0.03% |
3,067
-2,039
| -40% | -$263K |
|
538
Petrobras
PBR
$122B
| $506K | 0.03% |
50,146
-36,025
| -42% | -$385K |
|
539
Ultragenyx Pharmaceutical
RARE
$2.72B
| $506K | 0.03% |
7,198
+4,580
| +175% | +$325K |
|
540
CALL
Steel Dynamics
STLD
$34.4B
| $503K | 0.03% |
795
-765
| -49% | -$24.1K |
|
541
Antero Resources
AR
$10.9B
| $502K | 0.03% |
+21,236
| New | +$545K |
|
542
Parker-Hannifin
PH
$122B
| $502K | 0.03% |
+3,588
| New | +$477K |
|
543
CALL
Deere & Co
DE
$164B
| $501K | 0.03% |
1,137
+195
| +21% | +$18.3K |
|
544
CALL
Mondelez International
MDLZ
$78.1B
| $501K | 0.03% |
2,530
+101
| +4% | +$4.35K |
|
|
PTR
545
DELISTED
PETROCHINA COMPANY LIMITED ADS (REP 100 H SHARES)
PTR
| $501K | 0.03% |
6,808
+113
| +2% | +$7.97K |
|
546
APA Corp
APA
$12.8B
| $500K | 0.03% |
+7,889
| New | +$497K |
|
547
Acuity Brands
AYI
$9.93B
| $500K | 0.03% |
+2,168
| New | +$526K |
|
548
Cal-Maine
CALM
$4.16B
| $499K | 0.03% |
+11,299
| New | +$450K |
|
549
CALL
Wheaton Precious Metals
WPM
$50.6B
| $499K | 0.03% |
3,012
+666
| +28% | +$13.9K |
|
|
IDTI
550
DELISTED
Integrated Device Technology I
IDTI
| $495K | 0.03% |
21,034
+9,599
| +84% | +$221K |
|
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.